Gree GMV-615WM/B-X - Page 119

GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
116
db
On
16
On
XXXX/U8
On
The system detects pipe
failure of IDU. "XXXX"
indicates the project
number of the faulty IDU.
The fault code "U8" is
displayed after three
seconds. For example, if a
U8 fault occurs on IDU
100, LED3 will circularly
display "01", "00" (two
seconds later), and "U8"
(two seconds later).
Step 18: If no exception occurs when the unit continuously operates for 40 minutes, the system
automatically confirms commissioning completion, stops the entire unit, and restores the standby status.
The main board is displayed as follows:
Commissioning
Code
Progress Code
Status Code
Meaning
Progress
LED1
LED2
LED3
Code
Display
Status
Code
Display
Status
Code
Display
Status
17_Commissioning
completion status
01~04
On
OF
On
OF
On
The unit has completed
commissioning and in
standby status. LED1
displays the module
address; LED2 and LED3
display "OF".